Pd(OAc)_2与PPh_3在氯代甲烷中的反应研究

STUDY OF THE REACTION OF Pd(OAc)_2 WITH PPh_3 IN CCl_4

用Pd(OAc) 2 与PPh3在四氯甲烷中反应 ,合成了配合物PdCl2 (PPh3) 2 ·CCl4,得到单晶 ,用X ray衍射确定了单晶结构 .应用电子顺磁共振 自旋捕获 (EPR ST)技术研究了其反应的机理 .捕获了含碳自由基中间体 ,提出了反应机理 .

The complex Pd(PPh\-3)\-2Cl\-2\5CCl\-4 has been prepared by treatment of Pd(OAc)\-2 with PPh\-3 in CCl\-4. \{\}\+1H NMR, \{\}\+\{31\}P NMR, data are given. The molecular structure of Pd(PPh\-3)\-2Cl\-2 has been determined by single crystal X rays diffraction. The reaction mechanism is tentatively proposed and discussed. Radicals were trapped by PBN. This reaction was proved to be a free radical reaction by EPR ST method. The solvent CCl\-4 participated in the reaction.